HV

HV or Hv is a two-letter acronym which may refer to:

H.263

H.263 is a video compression standard originally designed as a low-bit-rate compressed format for videoconferencing. It was developed by the ITU-T Video Coding Experts Group (VCEG) in a project ending in 1995/1996 as one member of the H.26x family of video coding standards in the domain of the ITU-T, and it was later extended to add various additional enhanced features in 1998 and 2000. Smaller additions were also made in 1997 and 2001, and a unified edition was produced in 2005.

The H.263 codec was first designed to be utilized in H.324 based systems (PSTN and other circuit-switched network videoconferencing and videotelephony), but it also found use in H.323 (RTP/IP-based videoconferencing), H.320 (ISDN-based videoconferencing), RTSP (streaming media) and SIP (IP-based videoconferencing) solutions.

H.263 is a required video codec in ETSI 3GPP technical specifications for IP Multimedia Subsystem (IMS), Multimedia Messaging Service (MMS) and Transparent end-to-end Packet-switched Streaming Service (PSS). In 3GPP specifications, H.263 video is usually used in 3GP container format.

Hà Vị

Hà Vị is a commune (xã) and village in Bạch Thông District, Bắc Kạn Province, in Vietnam.

Coordinates: 20°49′N 105°55′E / 20.817°N 105.917°E / 20.817; 105.917

BHÉV

BHÉV (Budapest Helyiérdekű Vasút), is a system of four commuter rail lines (Szentendre HÉV, Gödöllő HÉV, Csömör HÉV and Ráckeve HÉV) and rapid transit (Csepel HÉV and Békásmegyer HÉV (part of the Szentendre HÉV)) lines in and around Budapest, Hungary. The BHÉV operates on standard gauge (1,435 mm (4 ft 8 ¹⁄₂ in) ), and is electrified at 1000 V DC.

The BHÉV lines were constructed as branch lines of the Hungarian State Railways. Helyiérdekű vasút (HÉV), literally "railway of local interest", is a general term in Hungarian traffic. Therefore, like internationally with the term metro, the stations are only marked with H or HÉV, though this is not the full name of the system. The four BHÉV lines are operated by the public transport company BKV, yet are not part of the Budapest Metro. Inside Budapest, standard BKV tickets and passes are valid on the BHÉV. Outside Budapest, a separate ticket must be validated.

Network

The BHÉV connects Csepel (south), Ráckeve (far south), Gödöllő (northeast), and Szentendre (north) with various points of central Budapest. The four BHÉV lines are not connected directly, each originating from a different terminus, but their railway are still connected to the MÁV lines. The BHÉV is a hybrid between a commuter rail and a rapid transit. Although most of its stations are above ground and outdoor, some are underground (for example the city centre terminus at Batthyány tér).